Butt Rock, as opposed to the above definitions, refers to bands (primarily from the 1990's to present) that use their voice in a twangy deep fashion that could only be described as coming from the butt. They can be on top of many types of music, but usually are made up of simple clean power chords. ex. Creed, Nickelback, Puddle of Mudd, Seether, Three Doors Down, Pearl Jam, Lifehouse, etc...
Did you hear that crappy butt rock band that tried to sound like Creed?
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